A9Tech
   Offers the general-purpose 2D CAD program A9CAD supporing industry standar DWG and DXF drawing formats, and the DWG/DXF translator A9Converter, both free.
   http://www.a9tech.com/

Accucadd
   A Windows drafting program, the successor to the DOS based RoboCAD.
   http://www.accucadd.com/

AllyCAD
   A 2D CAD package for the architectural, civil, and mechanical industries.
   http://www.allycad.com/

AndyCAD
   A low cost general purpose 2D CAD program.
   http://www.andycad.com/

CAD Schroer GmbH
   Manufacturer and vendor of the MEDUSA4 parametric 2D CAD system, and several application specific extensions.
   http://www.cad-schroer.com/

CadStd
   A drafting program for Windows, with a free lite version.
   http://www.cadstd.com/

Delta Cad
   A 2D CAD software designed to be easy to use.
   http://www.deltacad.com/

Delta Software international
   CAD Pro is a drafting and design software with engineering precision and adaptive tools.
   http://www.cadprosoftware.com/

General CADD Products, Inc.
   About the General CADD Pro 2D Windows CAD program, with user forums and a downloadable manual.
   http://www.generalcadd.com/

JustCad
   A 2D CAD program for Windows, distributed as shareware.
   http://justcad.com/

Malz++Kassner GmbH
   CAD 5 drafting software for Windows, with plug-ins to support DXF, DWG, HPGL/2 and SVG file formats.
   http://www.malz-kassner.com/

ProCAD+
   A computer aided 2D drawing program for Acorn RISC OS computers.
   http://www.dsnell.zynet.co.uk/CADindex.html

QCad
   A 2D CAD system for Linux, Unix Systems, Mac OS X and Windows, released as Open Source for unix based systems.
   http://www.ribbonsoft.com/qcad.html

VectorEngineer
   A multi-purpose 2D CAD system for technical drawings, designs, and isometric visualizations. A free version is available for download.
   http://www.vectorengineer.com/

ZiPCAD
   A drafting program for Palm OS handheld computers, with DXF file export.
   http://www.zipcad.com/